Adjustable sieve.



Patented Mgr. ll, I902.

1 No. 695,I04.

F. HIXSU'N. ADJUSTABLE SIEVE.

(Application filed June 1, 1900.)

(No Model.)

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UNITED States errant @rrrcn.

FRANK HIXSON, on ASHLAND, 01110, nssrenoa TO THE ASHLAND SIEVE COMPANY.

ADJUSTABLE SIEVE.

SPECIFICATION forming part of Letters Patent No. 695,104, dated March 11, 1902.

Application filed June 1,1900. Serial No. 18,696. (No model.)

To all, whom it may concern:

Be it known that I, FRANK HIIXSON, a citizen of the United States, residing at Ashland, in the county of Ashland and State of Ohio, have invented certain new and useful Improvements in Adjustable Chaifers or Sieves, of which the following is a specification.

My invention relates to adjustable chaffers or sieves, and in particular to the adjusting mechanism which operates the shafts and slats, the main object being the provision of improved mechanism which shall be located at the side of the frame and upon the outside of the shoe, where it will be easily accessible for manipulation and operation, which shall have the lever and rack-bar placed in any convenient position on the side of the shoe, which shall be so constructed that either end or the body of the frame can be raised or lowered, and which shall be so adapted that the frame can be quickly and easily removed from the machine.

A further object is the simplification of the mechanism and the reduction of first cost and maintenance.

With these ends in view my invention con-' sists in certain novelties of construction and combinations of parts hereinafter set forth and claimed.

The accompanying drawings illustrate an example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the application of the principle.

Figure 1 is a plan of a section of a chaffer or sieve and a part of a shoe, showing the disposition of the adjusting mechanism relative to the frame and shoe. Fig. 2 is a sectional View in elevation of Fig. 1, taken on line 2 2. Fig. 3 is aview in elevation of the outside of the shoe.

Referring to the several figures, the numeral 1 designates a part of a frame of a chaffer or sieve.

-2 represents the corrugated slats; 3, the crank-shafts, to which the slats are rigidly secured; 4, the bearings in the frame within which the shafts are adapted to revolve or rock.

5 is a gutter made in the frame of sufficient depth to allow the cranks to freely rock or rotate.-

6 is a rocker-bar having holes which form bearin gs.

7 represents the ends of the cranks, journaled in the bearings of the rocker-bar.

8 is an upright; 9, a pin by which the upright is pivoted to the frame; 10, a pin by which the upright is pivoted to the rocker-bar; 11, a connecting-bar; 12, aside of ashes which supports the frame of the chafier or sieve; 13, a rocker-arm journaled in the shoe; 14, the journal of the rocker-arm, projecting through the shoe and of an angular shape in cross-section at the end.

15 and 16 are pins by which the connectingbar is pivoted to the projecting end of theupright and to the rocker-arm.

17 is a flat lever, preferably of spring metal, secured to the end of the journal 14 and located on the outside of the shoe;

18 is a twist in the lever, which causes the parts each side of the same to lie in different planes at right angles to each other, 19 a toothed rack, and 20 designates holes made through the side of the shoe.

The modus opcrcmdi of the adjusting mechanism is obvious from an inspection of the drawings and need not be set forth.

From the foregoing it will be clear that I have produced an adjusting mechanism for chaffers or sieves which fulfils all the conditions set forth as the object of my invention. The mechanism is located on the side of the frame and partly upon the external surface of the shoe, where it is easily accessible. The lever and rack-bar are entirely outside of the shoe and can be located in any position at the ends or sides or at the center of the shoe, the holes 20 being adapted to receive the journal 14 of the rocker-arm, and the body or either end of the frame can be raised or lowered, as occasion may demand. To remove the frame from the machine, it is only necessary to disconnect the upright and connecting-bar by withdrawing the pin 15, as is quite obvious.

Changes and modifications can of course be introduced in the practical application of the adjusting mechanism as specifically illustrated without constituting a substantial de- 1 end only, slats mounted on the rock-shafts, 3o

parture from the scope of the invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a separator, the combination, With a shoe, of a chaffer or sieve mounted therein and comprising a frame, rock-shafts mounted in said frame, extending transversely thereof and provided with crank-arms at one end only, slats secured on the rock shafts, a rocker-bar located at the side of the frame adjacent to the shoe and connected with the crank-arms of the rock-shafts, an arm or upright pivoted at its lower end on the frame and pivotally connected between its ends to the rocker-bar, a rocker-arm mounted on the inner face of the shoe and having a journal extending through the Wall thereof, a lever mounted on the projecting outer end of said journal, means for securing said lever in position after adjustment, and a connectingbar pivotally connected to the rock-arm and to the upper end of the arm or upright, substantially as described.

2. In a separator, the combination, with a shoe, of a chaffer or sieve adjustably mounted therein and comprising a frame, rock-shafts ournaled therein and extending transversely thereof and provided with crank-arms at one a rocker-bar located at one side of the frame immediately adjacent to the side Wall of the shoe and pivotally connected with the crankarms of the rock-shafts, an arm or upright pivoted at its lower end onthe frame and pivotall y connected between its ends with the rocker-bar,the side wall of the shoe being provided with a plurality of apertures, a rockerarm having a journal adapted to extend through any desired one of said apertures, the rocker-arm being on the inner end of said journal and immediately adjacent to the inside Wall of the shoe, and a connecting-bar having a separable pivotal connection with the upper end of the arm or upright and with the rocker-arm, substantially as described.

3. The combination with a chaffer or sieve having crank-shafts and slats secured to the shafts, of a frame provided With bearings 4; a gutter 5; a rocker-bar 6; an upright 8; a connecting-bar 11; a rocker-arm 13; a lever 17; and a rack-bar.

In testimony whereof I affix mysignature in presence of two witnesses.

FRANK HIXSON. WVitnesses: H. L. MOGRAY, B. F. MARTIEN. 

